Manganese boride
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| IUPAC name
Boranylidynemanganese
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Other names
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3D model (JSmol)
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| ChemSpider | |
| ECHA InfoCard | 100.031.767 |
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PubChem CID
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CompTox Dashboard (EPA)
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| Properties | |
| BMn | |
| Molar mass | 65.75 g·mol−1 |
| Appearance | brown crystals |
| Density | 6.45–6.50 g/cm3 |
| Melting point | 1,890 °C (3,430 °F; 2,160 K) |
| Insoluble | |
Except where otherwise noted, data are given for materials in their standard state (at 25 °C [77 °F], 100 kPa).
Infobox references
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Manganese boride is a binary inorganic compound of manganese and boron with the chemical formula MnB.[1] Manganese boride is a hard, high-melting ceramic. Its hardness and stability arise from a strong network of covalent bonding between manganese and boron atoms.
Synthesis
Manganese boride is typically synthesized by direct combination of the elements at high temperatures. The general reaction is:
- Mn + B → MnB
Physical properties
Manganese boride forms brown crystals of the orthorhombic system, space group Pnma.[2] The compound is ferromagnetic.[3]
It is insoluble in water.[4]
MnB has low-temperature (α) and high-temperature (β) modifications, as well as a defect-rich low-temperature variant (α′).[5]
Uses
The compound is a refractory ceramic material belonging to the family of transition metal borides, known for their high hardness, thermal stability, and magnetic properties.[6] Manganese monoboride exists in several polymorphic forms and exhibits complex magnetic behavior, making it of interest for both fundamental materials science and potential practical applications.[7] As a result, MnB is widely used in the nuclear industry, aerospace high-temperature materials, new superconducting materials, and other fields.
References
- ^ Lide, David R. (9 March 1995). CRC Handbook of Chemistry and Physics: A Ready-reference Book of Chemical and Physical Data. CRC Press. p. 4-68. ISBN 978-0-8493-0595-5. Retrieved 30 April 2026.
- ^ "MnB: mp-8365". Materials Project. Retrieved 30 April 2026.
- ^ Ma, Shuailing; Bao, Kuo; Tao, Qiang; Zhu, Pinwen; Ma, Teng; Liu, Bo; Liu, Yazhou; Cui, Tian (6 March 2017). "Manganese mono-boride, an inexpensive room temperature ferromagnetic hard material". Scientific Reports. 7 (1) 43759. Bibcode:2017NatSR...743759M. doi:10.1038/srep43759. ISSN 2045-2322. PMC 5338324. PMID 28262805.
- ^ "Manganese Boride (MnB) Powder (CAS No. 12045-15-7)". samaterials.com. Retrieved 30 April 2026.
- ^ Kalyon, Nalan; Zieschang, Anne-Marie; Hofmann, Kathrin; Lepple, Maren; Fries, Maximilian; Skokov, Konstantin P.; Dürrschnabel, Michael; Kleebe, Hans-Joachim; Gutfleisch, Oliver; Albert, Barbara (1 June 2023). "CrB-type, ordered α -MnB: Single crystal structure and spin-canted magnetic behavior". APL Materials. 11 (6) 060701. Bibcode:2023APLM...11f0701K. doi:10.1063/5.0148236. Retrieved 30 April 2026.
- ^ Zhu, Shiyu; Zhang, Xudong; Chen, Jing; Liu, Cong; Li, Dongzhi; Yu, Hui; Wang, Feng (1 July 2019). "Insight into the elastic, electronic properties, anisotropy in elasticity of Manganese Borides". Vacuum. 165: 118–126. Bibcode:2019Vacuu.165..118Z. doi:10.1016/j.vacuum.2019.04.014. ISSN 0042-207X. Retrieved 30 April 2026.
- ^ "Manganese Boride (MnB) | AMERICAN ELEMENTS". American Elements. Retrieved 30 April 2026.